with lots of star power this year. it is one of san francisco's biggest trade shows, of course, with 30,000 people attending this year. apple is no longer associated with mac world since 2009 but there is the next best thing. actor ashton kutcher is here, he is playing the late steve jobs in a new movie about the life of the apple founder and musician "will i am" will talk about the future of technology and gadgets. such a history, 29 years of mac world, the i-fans are here, pumped up, and talking about the fact they cannot wait to immerse in everything mac. big bucks for san francisco, too, a projected $23 million in revenue over the three day event, mostly people coming here from all over the world have preregistered for the event but if you want to show up and see what it is about, day passes are available, and they start at $40. mac world wraps up on saturday. we are live in san francisco for abc7 news. >> this morning, we have new details only on abc7 news as investigators retrace the steps of a san francisco man suspected in the kevin collins missing pens case. the ten-year-old wa